上皮性卵巢癌组织miR-338-3p、miR-1294的表达及临床意义

摘要 目的：探讨上皮性卵巢癌组织中微小RNA（miR）-338-3p、miR-1294表达与患者临床病理参数的关系,并分析其表达对上皮性卵巢癌预后的影响。方法：收集2010年6月～2015年6月我院行手术治疗的上皮性卵巢癌患者的石蜡组织样本（癌组织和癌旁正常组织）,实时荧光定量PCR（RT-PCR）技术检测组织样本中miR-338-3p、miR-1294的表达情况;分析癌组织中miR-338-3p、miR-1294表达与患者临床病理参数的关系;Kaplan-Meier生存曲线分析miR-338-3p、miR-1294表达与患者预后的关系;Cox回归模型分析上皮性卵巢癌患者的预后影响因素。结果：与癌旁正常组织相比,上皮性卵巢癌组织中miR-338-3p、miR-1294表达均降低（均P<0.05）;miR-338-3p表达与组织学分级、淋巴结转移、FIGO分期相关（均P<0.05）;miR-1294表达与肿瘤直径、淋巴结转移、FIGO分期相关（均P<0.05）。Kaplan-Meier生存曲线结果显示,miR-338-3p低表达组患者、miR-1294低表达组患者的预后较差（均P<0.05）。Cox回归模型分析结果显示,淋巴结转移、较高FIGO分期、miR-338-3p低表达、miR-1294低表达是上皮性卵巢癌预后的危险因素（均P<0.05）。结论：上皮性卵巢癌组织中miR-338-3p、miR-1294均低表达,且均与较差临床病理参数、预后不良相关;miR-338-3p、miR-1294可能是上皮性卵巢癌患者预后预测的潜在指标。     

食道癌组织miR-21、miR-182表达与临床病理特征及预后的关系

目的:探讨食道癌组织微小RNA-21(miR-21)、微小RNA-182(miR-182)表达与临床病理特征及预后的关系。方法:选取2011年4月到2013年7月期间在我院接受手术治疗的食道癌患者84例,取患者的癌组织和癌旁正常组织作为检验标本,比较癌组织和癌旁正常组织中miR-21、mi R-182的表达水平,并分析食道癌组织中mi R-182、mi R-21的表达与临床病理特征及预后的关系。结果:癌组织中mi R-21、mi R-182的相对表达量明显高于癌旁正常组织,差异有统计学意义(P<0.05)。食道癌组织中mi R-21的表达与淋巴结转移、临床分期有关(P<0.05),与性别、年龄、分化程度、肿瘤大小无关(P>0.05);食道癌患者癌组织中miR-182的表达与年龄、性别、肿瘤大小无关(P>0.05),与分化程度、临床分期、淋巴结转移有关(P<0.05)。食道癌癌组织中miR-21、miR-182高表达患者的中位生存时间均低于低表达患者,差异有统计学意义(P<0.05)。结论:食道癌组织mi R-21、mi R-182表达与患者的部分临床病理特征及预后有关,两者有望成为食道癌新的治疗靶点。     

miR-204-5p regulates cell proliferation,invasion, and apoptosis by targeting IL-11 in esophageal squamous cell carcinoma

Esophageal cancer (EC) is the world's eighth most common malignant neoplasm and is ranked as the sixth leading cause of death related to cancer. Aberrant microRNA (miRNA) expression has been reported to be associated with esophageal squamous cell carcinoma. However, the molecular mechanism of miR-204-5p in esophageal squamous cell carcinoma (ESCC) is not clear. Therefore, the aim of this study was to investigate the potential role of miR-204-5p in ESCC. In the present study, we found that miR-204-5p could affect ESCC proliferation, invasion, apoptosis, and cell cycle in cell and mouse models. A dual-luciferase reporter assay showed that miR-204-5p expression was negatively correlated with interleukin-11 (IL-11) expression. IL-11 overexpression reversed the suppressive effects of miR-204-5p in the cell lines. These results indicated that miR-204-5p functions as a tumor suppressor by directly targeting IL-11 in ESCC.     

鼻咽癌组织miR-20b-5p、miR-325-3p表达水平与放疗敏感性和预后的关系研究

摘要 目的：探讨鼻咽癌组织微小核糖核酸（miR）-20b-5p、miR-325-3p表达水平与放射治疗敏感性和预后的关系。方法：选取2017年11月至2019年6月我院收治的84例确诊为鼻咽癌并拟进行放射治疗的患者设为鼻咽癌组,另选取同期收治的42例慢性鼻咽炎患者为对照组,比较鼻咽癌组织及鼻咽部炎症组织中miR-20b-5p、miR-325-3p表达水平,分析鼻咽癌组织中miR-20b-5p、miR-325-3p表达水平与鼻咽癌患者临床病理特征的关系。根据鼻咽癌患者放疗敏感性评估结果分为敏感组和抵抗组,比较两组miR-20b-5p、miR-325-3p表达水平。随访3年,Kaplan-Meier法及Cox回归分析法分析miR-20b-5p、miR-325-3p表达水平与鼻咽癌患者生存预后的关系。结果：鼻咽癌组miR-20b-5p、miR-325-3p表达水平均高于对照组（P＜0.05）。不同T分期、N分期、临床分期患者在miR-20b-5p、miR-325-3p高表达组与低表达组中的占比比较存在统计学差异（P＜0.05）。完成7~8周放疗后3个月评估患者放疗抵抗率36.90%,抵抗组miR-20b-5p、miR-325-3p表达水平均高于敏感组（P＜0.05）。miR-20b-5p高表达鼻咽癌患者的累积生存时间短于miR-20b-5p低表达患者（P＜0.05）;miR-325-3p高表达鼻咽癌患者的累积生存时间短于miR-325-3p低表达患者（P＜0.05）。单因素、多因素Cox回归分析显示,年龄＞60岁、T3/T4期、miR-20b-5p高表达、miR-325-3p高表达是鼻咽癌患者预后不良的独立危险因素（P＜0.05）。结论：鼻咽癌组织中miR-20b-5p、miR-325-3p均异常高表达,其表达水平与肿瘤浸润深度、淋巴结转移、临床分期及放疗敏感性有关,且miR-20b-5p、miR-325-3p高表达患者放疗后预后不良风险更大。     

LncRNA DANCR promotes cervical cancer progression by upregulating ROCK1 via sponging miR-335-5p

Emerging evidence highlights the key regulatory roles of long noncoding RNAs (lncRNAs) in the initiation and progression of numerous malignancies. The lncRNA identified as differentiation antagonizing nonprotein coding RNA (DANCR) is a novel lncRNA widely involved in the development of multiple human cancers. However, the function of DANCR and its potential molecular mechanism in cervical cancer remain unclear. In this study, we discovered that DANCR was significantly elevated in cervical cancer tissues and cells, and was closely correlated with poor prognosis of cervical cancer patients. In addition, knockdown of DANCR inhibited proliferation, migration, and invasion of cervical cancer cells in vitro, indicating that DANCR functioned as an oncogene in cervical cancer. Moreover, we verified that DANCR could directly bind to miR-335-5p, isolating miR-335-5p from its target gene Rho-associated coiled-coil containing protein kinase 1 (ROCK1). Functional analysis showed that DANCR regulated ROCK1 expression by competitively binding to miR-335-5p. Further cellular behavioral experiments revealed that miR-335-5p mimics and ROCK1 knockdown reversed the effects of upregulated DANCR on proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) of cervical cancer cells by rescue assays. In summary, this study demonstrated that DANCR promoted cervical cancer progression by functioning as a competing endogenous RNA (ceRNA) to regulate ROCK1 expression via sponging miR-335-5p, suggesting a novel potential therapeutic target for cervical cancer.     

食管癌组织miR-21、miR-182表达与临床病理特征及预后的关系

目的:探讨食管癌组织微小RNA-21(miR-21)、微小RNA-182(miR-182)表达与临床病理特征及预后的关系。方法:选择2010年10月至2014年2月期间在我院治疗的120例食管癌患者为研究对象,采集患者的食管癌组织及癌旁组织,采用荧光定量PCR检测组织中miR-21、miR-182表达量,采用Kaplan-Meier法分析患者生存情况。结果:与癌旁组织相比,食管癌组织中miR-21、miR-182表达量明显升高(P<0.05)。食管癌组织中miR-21、miR-182表达均与TNM分期和淋巴结转移相关(P<0.05)。miR-21低表达患者的5年生存率明显高于高表达患者(P<0.05),miR-182低表达患者的5年生存率明显高于高表达患者(P<0.05)。结论:miR-21、miR-182表达量在食管癌中上调,与食管癌TNM分期和淋巴结转移相关。miR-21高表达以及miR-182高表达患者5年生存率下降,检测miR-21、miR-182表达量在食管癌患者预后预测中具有一定临床意义。     

miR-214-5p targets KLF5 and suppresses proliferation of human hepatocellular carcinoma cells

MicroRNAs (miRNAs) are small endogenous conserved RNAs regulating genes expression through base pairing with the 3′-untranslated region (3′-UTR) of target messenger RNAs. MiR-214-5p is a newly identified miRNA with its biological role largely unknown. In this study, we explored miR-214-5p expression status in 78 paired tumor and nontumor tissues obtained from patients with hepatocellular carcinoma (HCC) by RT-qPCR. The effects of miR-214-5p expression on HCC cell proliferation, cell cycle progression, and cell migration were measured by CCK-8 assay, flow cytometry, and wound-healing assay. A dual-luciferase activity assay was performed to identify whether KLF5 was a target of miR-214-5p. Kaplan-Meier curve and log-rank test were used to investigate the effects of miR-214-5p and KLF5 on overall survival and disease-free survival of patients with HCC. We found miR-214-5p expression was sharply reduced in HCC tissues and cell lines compared with the normal tissues and cell lines. Functional assay revealed that miR-214-5p overexpression could downregulate cell proliferation, cell migration, and arrested cell cycle at G0/G1 phase. Further, we validated Krüppel-like factor 5 (KLF5) as a direct target of miR-214-5p, and was upregulated in HCC and inversely correlated with the expression of miR-214-5p. Moreover, we found the low expression of miR-214-5p and high expression of KLF5 were correlated with tumor size, tumor stage, and poorer 5-year overall survival and disease-free survival of patients with HCC. In conclusion, our results suggested miR-214-5p functions as a tumor suppressor through targeting KLF5 in HCC. Also, miR-214-5p and KLF5 were identified as potential prognostic markers and might be therapeutic targets in HCC.     

Tumor-Suppressive Function of miR-139-5p in Esophageal Squamous Cell Carcinoma

Recent studies have demonstrated the possible function of miR-139-5p in tumorigenesis. However, the exact mechanism of miR-139-5p in cancer remains unclear. In this study, the association of miR-139-5p expression with esophageal squamous cell carcinoma (ESCC) was evaluated in 106 pairs of esophageal cancer and adjacent non-cancerous tissue from ESCC patients. The tumor suppressive features of miR-139-5p were measured by evaluating cell proliferation and cell cycle state, migratory activity and invasion capability, as well as apoptosis. Luciferase reporter assay and Western blot analysis were performed to determine the target gene regulated by miR-139-5p. The mRNA level of NR5A2, the target gene of miR-139-5p, was determined in ESCC patients. Results showed that reduced miR-139-5p level was associated with lymph node metastases of ESCC. MiR-139-5p was investigated to induce cell cycle arrest in the G0/G1 phase and to suppress the invasive capability of esophageal carcinoma cells by targeting the 3′UTR of oncogenic NR5A2. Cyclin E1 and MMP9 were confirmed to participate in cell cycle arrest and invasive suppression induced by NR5A2, respectively. Pearson correlation analysis further confirmed the significantly negative correlation between miR-139-5p and NR5A2 expression. The results suggest that miR-139-5p exerts a growth- and invasiveness-suppressing function in human ESCCs, which demonstrates that miR-139-5p is a potential biomarker for early diagnosis and prognosis and is a therapeutic target for ESCC.     

miR-9-5p靶向Ambra1促进舌癌细胞增殖

miRNAs在肿瘤中异常表达,且与肿瘤的发生发展密切相关。目前发现,miR-9-5p在肿瘤中可能发挥原癌或抑癌效应,功能尚未完全阐述清楚。本文拟探讨miR-9-5p在舌癌中的作用。前期研究中收集10例舌癌组织及配对的癌旁组织,实时荧光定量PCR技术检测后发现,miR-9-5p在舌癌组织中的表达量显著高于癌旁组织,且其在舌癌细胞中的表达量也明显高于正常舌上皮细胞。此外,在舌癌细胞Tca8113中过表达miR-9-5p显著增加细胞的增殖能力。生物信息学预测及双荧光素酶报告基因实验证实,miR-9-5p可直接结合在自噬/苄氯素1调节因子1（activating molecule in beclin1-regulated autophagy, Ambra1）的 3′-UTR区域,靶向抑制Ambra1表达。Western印迹结果证实过表达miR-9-5p降低Ambra1的表达,反之亦然。Ambra1在舌癌细胞中的表达量显著低于正常舌上皮细胞。BrdU实验证实在舌癌细胞SCC-25中过表达Ambra1可显著抑制其增殖能力;相反,使用siRNA技术沉默Ambra1能够显著促进Tca8113细胞的增殖。在干预miR-9-5p的细胞中同时干预Ambra1的表达,结果发现Ambra1可显著逆转miR-9-5p对舌癌细胞增殖的促进作用。总之,miR-9-5p在舌癌中可能发挥原癌基因样作用,通过直接靶向抑制Ambra1表达进而促进舌癌细胞发生增殖。     

miR-103a-2-5p/miR-30c-1-3p inhibits the progression of prostate cancer resistance to androgen ablation therapy via targeting androgen receptor variant 7

Androgens and androgen receptors are vital factors involved in prostate cancer progression, and androgen ablation therapies are commonly used to treat advanced prostate cancer. However, the acquisition of androgen ablation therapy resistance remains a challenge. Recently, androgen receptor splicing variants lacking the ligand-binding domain have been reported to play a critical role in the acquisition of androgen ablation therapy resistance. In the present study, we revealed that the messenger RNA expression and the protein levels of an androgen receptor variant 7 (AR-V7) were higher in prostate cancer tissue samples and in the AR-positive prostate cancer cell line, VCaP. In contrast, microRNA (miR)-30c-1-3p/miR-103a-2-5p expression was significantly downregulated in tumor tissues and cells. miR-30c-1-3p/miR-103a-2-5p overexpression could inhibit AR-V7 expression, suppress VCaP cell growth, and inhibit AR-V7 downstream factor expression by directly targeting the 3′-untranslated region of AR-V7. Under enzalutamide (Enza) treatment, the effects of AR-V7 overexpression were the opposite of those of miR-103a-2-5p/miR-30c-1-3p overexpression; more importantly, the effects of miR-103a-2-5p/miR-30c-1-3p overexpression could be significantly reversed by AR-V7 overexpression under Enza. In summary, we demonstrated a novel mechanism of the miR-30c-1-3p/miR-103a-2-5p/AR-V7 axis modulating the cell proliferation of AR-positive prostate cancer cells via AR downstream targets. The clinical application of miR-30c-1-3p/miR-103a-2-5p needs further in vivo validation.     

HOXC13-AS promotes breast cancer cell growth through regulating miR-497-5p/PTEN axis

Dysregulated long noncoding RNAs (lncRNAs) remains to be explored in tumorigenesis. LncRNA HOXC13 antisense RNA (HOXC13-AS) has been found as an oncogene in many cancers; however, the role of HOXC13-AS in breast cancer still elusive. In this study, the HOXC13-AS levels and its role in cell proliferation was first measured by real-time quantitative polymerase chain reaction, Cell Counting Kit-8 assay, and colony formation assay. It showed that HOXC13-AS was increased in breast cancer tissues compared with the adjacent normal tissues and upregulated HOXC13-AS promoted the growth of breast cancer cells. Then, we found that the miR-497-5p levels were downregulated in cancer tissues compared with the adjacent tissues and miR-497-5p suppressed breast cancer cell proliferation. Further study showed that HOXC13-AS could function as a “sponge” for miR-497-5p then suppress miR-497-5p expression. Moreover, we next identified that Phosphatase and Tensin homolog (PTEN) is the target of miR-497-5p. Overexpression of miR-497-5p by chemical mimics decreased the expression of PTEN, while downregulation of miR-497-5p by HOXC13-AS rescued the expression of PTEN. Finally, we showed that HOXC13-AS promoted the proliferation of breast cancer cells and tumor growth through miR-497-5p/PTEN axis in vitro and in vivo. Hence, we conclude that HOXC13-AS, which is significantly upregulated in breast cancers, promoted cell proliferation through the suppressed miR-497-5p and further upregulated PTEN.     

miR-122-5p promotes aggression and epithelial-mesenchymal transition in triple-negative breast cancer by suppressing charged multivesicular body protein 3 through mitogen-activated protein kinase signaling

Triple-negative breast cancer (TNBC) is highly metastatic and frequently has a poor prognosis. The lack of comprehension of TNBC and gene therapy targets has led to limitedly effective treatment for TNBC. This study was conducted to better understand the molecular mechanism behind TNBC progression, and to find out promising gene therapy targets for TNBC. Herein the influence of miR-122-5p's binding charged multivesicular body protein 3 (CHMP3) 3′-untranslated region (3′-UTR) on in TNBC cells was investigated. in vitro experiments quantitative real-time polymerase chain reaction, immunoblot analysis, dual-luciferase reporter gene assay, cell counting assay, transwell invasion assay, and flow cytometry-determined cell apoptosis assay were employed. We also used TargetScan Human 7.2 database to find out the target relationship between miR-122-5p and CHMP3 3′-UTR. TImer algorithm was used to provide an overview of the expression of CHMP3 gene across human pan-cancer, to predict the survival outcome of breast cancer patients, and to predict the correlation between CHMP3 gene expression and epithelial-mesenchymal transition (EMT) and mitogen-activated protein kinase (MAPK)-related gene expression. CHMP3 gene was significantly downregulated across a wide range of human cancers including breast cancer (BRCA). A higher level of CHMP3 gene predicted a better 3- and 5-year survival outcome of patients with BRCA. In our experiments, miR-122-5p was significantly upregulated and CHMP3 gene was significantly downregulated in TNBC cells compared with normal cell line. miR-122-5p mimics enhanced TNBC cell viability, proliferation, and invasion whereas the upregulation of CHMP3 gene led to an opposite outcome. Forced expression of miR-122-5p suppressed cell apoptosis, compelled EMT and MAPK signaling whereas forced expression of CHMP3 did the opposite. We then conclude that miR-122-5p promotes aggression and EMT in TNBC by suppressing CHMP3 through MAPK signaling.     

miR-324-5p、miR-605-3p在脑胶质瘤组织的表达及与临床病理参数和预后的关系

摘要 目的：探讨微小核糖核酸（miRNA）-324-5p、miR-605-3p在脑胶质瘤组织的表达及与临床病理参数和预后的关系。方法：选取2018年1月～2019年12月徐州医科大学附属医院收治的90例脑胶质瘤患者。收集术中部分瘤组织和瘤旁组织,采用实时荧光定量聚合酶链式反应（qRT-PCR）检测miR-324-5p、miR-605-3p表达。根据脑胶质瘤组织中miR-324-5p、miR-605-3p表达的平均值分为高表达组和低表达组,采用Kaplan-Meier法分析不同miR-324-5p、miR-605-3p表达脑胶质瘤患者生存情况,采用多因素Cox回归分析脑胶质瘤患者预后的影响因素。结果：与瘤旁组织比较,脑胶质瘤组织中miR-324-5p、miR-605-3p表达降低（P＜0.05）。不同分化程度、淋巴结转移、世界卫生组织（WHO）中枢神经系统肿瘤分类的脑胶质瘤患者miR-324-5p、miR-605-3p表达比较有差异（P＜0.05）。90例脑胶质瘤患者3年总生存率为36.67%（33/90）。Kaplan-Meier生存曲线分析显示,miR-324-5p高表达组、miR-605-3p高表达组总生存率高于miR-324-5p低表达组、miR-605-3p低表达组（P＜0.05）。多因素Cox回归分析显示,低分化、淋巴结转移和WHO中枢神经系统肿瘤分类Ⅲ～Ⅳ级为脑胶质瘤患者死亡的独立危险因素,miR-324-5p和miR-605-3p升高为独立保护因素（P＜0.05）。结论：脑胶质瘤组织中miR-324-5p、miR-605-3p呈低表达,与分化程度、淋巴结转移、WHO中枢神经系统肿瘤分类有关,miR-324-5p、miR-605-3p低表达还可导致不良预后。     

Clinical significance of miR-140-5p and miR-193b expression in patients with breast cancer and relationship to IGFBP5

The functional role of IGFBP5 in breast cancer is complicated. Experimental and bioinformatics studies have shown that IGFBP5 is targeted by miR-140-5p and miR-193b, although this has not yet been proven in clinical samples. The aim of this study was to evaluate the expression of miR-140-5p and miR-193b in breast cancer and adjacent normal tissue and assess its correlation with IGFBP5 and the clinicopathological characteristics of the tumors. IGFBP5 protein expression was analyzed immunohistochemically and IGFBP5, miR-140 and miR-193b mRNA expression levels were analyzed with real-time RT-PCR. Tumor tissue had higher miR-140-5p expression than adjacent normal tissue (p = 0.015). Samples with no immunohistochemical staining for IGFBP5 showed increased miR-140-5p expression (p = 0.009). miR-140-5p expression was elevated in invasive ductal carcinomas (p = 0.002), whereas basal-like tumors had decreased expression of miR-140-5p compared to other tumors (p = 0.008). Lymph node-positive samples showed an approximately 13-fold increase in miR-140-5p expression compared to lymph node-negative tissue (p = 0.049). These findings suggest that miR-140-5p, but not miR-193b, could be an important determinant of IGFBP5 expression and clinical phenotype in breast cancer patients. Further studies are needed to clarify the expressional regulation of IGFBP5 by miR-140-5p.     

miR-491-5p靶向调控SHOC2对食管鳞癌细胞增殖、迁移及侵袭的影响

目的探讨miR-491-5p对食管鳞癌细胞增殖、迁移及侵袭的影响及作用机制。 方法培养永生化食管上皮细胞株HET-1A和人食管癌细胞株EC109,EC9706,KYSE510,qRT-PCR检测细胞中miR-491-5p和富含亮氨酸重复蛋白SHOC2 （SHOC2） mRNA水平。EC109细胞分为空白对照组、miR- 491-5p组、miR-NC组、miR-491-5p+pcDNA-SHOC2组和miR-491-5p+pcDNA组,MTT检测细胞增殖,Transwell检测细胞迁移和侵袭,Western Blot法检测CyclinD1、Vimentin、E-cadherin以及MAPK/ERK信号通路相关蛋白水平。双荧光素酶报告基因实验验证miR- 491- 5p与SHOC2之间调控关系。两组间比较采用独立样本t检验,多组间比较采用单因素方差分析,两两比较采用SNK-q检验。 结果食管鳞癌细胞EC109、EC9706和KYSE510中miR-491-5p表达水平低于HET-1A细胞（0.32±0.06、0.62±0.10、0.61±0.08比1.00±0.08）,差异具有统计学意义（F = 106.340,P < 0.001）;SHOC2 mRNA表达水平高于HET- 1A细胞（2.85±0.16、1.73±0.10、1.45±0.06比1.02±0.09）,差异具有统计学意义（F = 464.949,P < 0.001）。miR-491-5p组EC109细胞培养72 h后的OD值、细胞迁移数、侵袭数及CyclinD1、Vimentin、p-MEK和p-ERK蛋白水平均低于miR-NC组（0.70±0.06比1.42±0.08,65.01±10.36比150.01±12.48,70.03±10.26比140.02±11.85,0.30±0.03比0.93±0.16,0.41±0.05比0.86±0.08,0.32±0.06比0.95±0.11,0.40±0.06比0.92±0.13）,差异具有统计学意义（F = 236.565、159.440、120.706、101.071、98.619、130.766、77.046,P均< 0.001）,E-cadherin蛋白水平高于miR-NC组（0.89±0.13比0.48±0.08）,差异具有统计学意义（F = 816.432,P < 0.001）。miR-491-5p在EC109细胞中负调控SHOC2表达,SHOC2过表达逆转了miR-491-5p过表达对EC109细胞增殖、迁移和侵袭及MAPK/ERK信号通路的影响。 结论miR-491-5p可抑制食管鳞癌细胞的增殖、迁移和侵袭,其作用机制可能与下调SHOC2表达抑制MAPK/ERK信号通路活性有关。     

Upregulation of miR-582-5p regulates cell proliferation and apoptosis by targeting AKT3 in human endometrial carcinoma

The human endometrial carcinoma is one of the most common female malignancies, and there is an urgent requirement to explore new therapeutic strategies. There is accumulating evidence that microRNAs (miRNAs) can serve as potential diagnostic and prognostic biomarkers for various types of cancer, but the significance of miR-582-5p still remains largely unknown in the endometrial carcinoma. The aims of this study were to understand and identify the influence of miR-582-5p on the proliferation and apoptosis of human endometrial carcinoma and its relevant mechanism. First, quantitative real-time PCR (qRT-PCR) was used to detect miR-582-5p and AKT3 expression in human tissue samples and cells. Then, CyQuant assay and 2D colony assay were employed to evaluate cell proliferation. Western blotting was used to determine protein expression. Subsequently, the luciferase reporter assay was used to identify the target of miR-582-5p. Finally, Annexin V assay was used to detect cell apoptosis. We found that miR-582-5p expression was significantly decreased in human endometrial carcinoma tissues, and miR-582-5p upregulation in human endometrial carcinoma cells inhibit cell proliferation and promote apoptosis. Moreover, AKT3 was validated as a target of miR-582-5p and AKT3 expression was inversely correlated with miR-582-5p expression. Besides, AKT3 upregulation efficiently abrogates the effect of miR-582-5p on the cells. These results demonstrated that miR-582-5p regulates cell proliferation and apoptosis in human endometrial carcinoma via AKT3. Thus, miR-582-5p represents a potential therapeutic target in human endometrial carcinoma meriting further investigation.     

长链非编码RNA SNHG7靶向调控miR-9-5p参与舌癌进程

目前发现长链非编码RNA（long non-coding RNA, lncRNA）小核仁RNA宿主基因7 (small nucleolar RNA host gene 7, SNHG7)在多种肿瘤中高表达,发挥原癌基因效应,但是其在舌癌中的功能尚未研究。qRT-PCR结果证实,SNHG7在舌癌组织和细胞中均下调。在舌癌细胞中,过表达SNHG7抑制舌癌细胞增殖,敲低SNHG7促进舌癌细胞增殖。生物信息学分析及双荧光素酶报告基因实验证实,miR-9-5p与SNHG7结合且下调其表达。过表达SNHG7,miR-9-5p表达量降低而自噬/苄氯素1调节因子1（autophagy/Beclin 1 regulator 1, Ambra1）的表达增加。敲低SNHG7,上调miR-9-5p,且降低Ambra1的表达。临床组织标本随访资料统计发现,SNHG7、Ambra1与舌癌患者预后正相关,而miR-9-5p与舌癌患者预后负相关。提示SNHG7/miR-9-5p/Ambra1可作为舌癌预后的潜在标志物。     

脑胶质瘤组织miR-211、miR-374、miR-510表达水平与临床病理特征及预后的关系研究

摘要 目的：探讨脑胶质瘤组织微小RNA（miR）-211、miR-374、miR-510表达水平与临床病理特征及预后的关系。方法：选择2013年8月至2015年8月我院诊治的83例脑胶质瘤患者作为研究对象,选择同期由于脑外伤在我院行内减压术切除的正常脑组织样本31份作为对照样本。采用荧光定量PCR检测miR-211、miR-374、miR-510表达水平,生存分析采用Kaplan-Meier法,应用Cox比例风险回归模型分析预后的影响因素。结果：与正常脑组织相比,脑胶质瘤组织中miR-211、miR-374表达水平明显下降,miR-510表达水平明显升高（P<0.05）。脑胶质瘤组织miR-211、miR-374、miR-510表达均与WHO分级和卡氏功能状态量表(KPS)评分有关（P<0.05）。miR-211、miR-374低表达患者的5年总生存率明显低于高表达患者,miR-510低表达患者的5年总生存率明显高于高表达患者（P<0.05）。WHO分级、KPS评分、miR-211、miR-374和miR-510表达是脑胶质瘤患者预后的影响因素（P<0.05）。结论：脑胶质瘤组织中miR-211和miR-374表达下调,而miR-510表达上调,miR-211、miR-374和miR-510表达均与WHO分级、KPS评分和预后相关,检测miR-211、miR-374和miR-51在脑胶质瘤患者的诊断和治疗中具有一定临床意义。     

LINC00958 facilitates cervical cancer cell proliferation and metastasis by sponging miR-625-5p to upregulate LRRC8E expression

Accepted as a malignant tumor worldwide, cervical cancer (CC) has attracted much attention for its high incidence and mortality rates. Previous studies have elucidated the critical regulatory function that long noncoding RNAs (lncRNAs) exert on the tumorigenesis and progression of diverse tumors. Although multiple investigations have depicted that LINC00958 has a great impact on the complex biological process of many cancers, knowledge concerning the regulatory role of LINC00958 in CC remains limited and needs to be further explored. In our study, LINC00958 expression was evidently overexpressed in CC tissues and cells. Besides this, LINC00958 negatively regulated miR-625-5p expression and was verified to bind with miR-625-5p in CC. Subsequently, it was testified by a series of experiments that LINC00958 promotes CC cell proliferation and metastasis by sponging miR-625-5p. Furthermore, the leucine-rich repeat containing the eight family member E (LRRC8E) could bind with miR-625-5p, and its expression was negatively modulated by miR-625-5p, whereas positively regulated by LINC00958 in CC. Final rescue assays verified the effects of LINC0095/LRRC8E interaction and miR-625-5p/LRRC8E interaction on CC cell proliferation and metastasis. Collectively, LINC00958 facilitates CC cell proliferation and metastasis via the miR-625-5p/LRRC8E axis.